I say “currently” because there is a bill passing through the legislature even as we speak to remove that requirement for 3-4 unit properties, so patience might be rewarded.And just make sure the zoning allows 3-families before you make a decision based on that potential.  

Multiple studies show that these families typically have no ability to cover a $400 emergency.

I know that in single families in Cleveland Heights people have put in basement bedrooms with an egress window and they were on formal plans that were submitted to the city and approved. 

Quote from @Leonard Rybak: Quote from @Greg Scott:Please share an investment that offers 20% plus returns Almost every real estate investment I have made has had returns in excess of 20%, both single family and multifamily.  

. - Pre Approvals & Loan Commitments.

From my understanding she was to take over the existing mortgage of their family home (the father and mother are on the deed).

What I have realized is that we have to learn to run the business with all its risks and challenges ... it’s not as simple as renting a multi family unit.

I bought my rentals in Killeen while at Fort Hood early 2010s, including quadplexes. 2-4 families seem to be especially popular around military installations perhaps?

That's for single family and small multis and if that's your game then that's good. 

@James Rodenberg aside from the time commitment, there is a skillset requirement to self manage.